Based on research, college and pros, majority of fumbles came from players who wore long sleeve shirts. There is no grit or texture on the shirt like there is with skin of the upper arm.

Analyst on espn said the following:


“Having played football for 18 years as a QB, RB, and DB, I personally found Under Armour caused me to lose traction on the football. In fact, I never really saw the benefit of wearing sleeves.

I think that most ball carriers would agree with me in saying that, unless you are playing a position in which you never touch the ball, you are better without sleeves in general. Watch an NFL game and take note of the fact that zero ball carriers wear sleeves.

Honestly, Under Armour is more of a fashion statement than anything. Real ball players don't wear sleeves, rain or shine.”